[arin-ppml] ULA-C

Roger Marquis marquis at roble.com
Tue Apr 13 12:33:55 EDT 2010

William Herrin wrote:
> Owen DeLong wrote:
>> A non-unified policy for ULA/GUA will lead to abuse of
>> ULA as an end-run for GUA which is, in my opinion, an unacceptable
>> risk.
> I asked in a previous message and I'll ask again: why wouldn't the
> combination of ISP route filtering and policy language that directs
> ARIN to revoke ULA registrations in response to misuse as GUA space
> fully resolve this alleged problem?

I would also like to know why Owen believes filtering would be a suitable
replacement for NAT's security (such as it is), whereas similar filters
would not work for route announcements and ULA/GUA traffic.

Roger Marquis

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